/**
 *    Copyright (C) 2014 MongoDB Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

#include "mongo/platform/basic.h"

#include "mongo/logger/log_component.h"
#include "mongo/logger/parse_log_component_settings.h"

#include "mongo/db/jsobj.h"
#include "mongo/unittest/unittest.h"

namespace {

    using namespace mongo;
    using namespace mongo::logger;

    typedef std::vector<LogComponentSetting> Settings;

    TEST(Empty, Empty) {
        BSONObj input;
        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_OK(result.getStatus());
        ASSERT_EQUALS(result.getValue().size(), 0u);
    }

    TEST(Flat, Numeric) {
        BSONObj input = BSON( "verbosity" << 1 );

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_OK(result.getStatus());
        ASSERT_EQUALS(result.getValue().size(), 1u);
        ASSERT_EQUALS(result.getValue()[0].level, 1);
        ASSERT_EQUALS(result.getValue()[0].component, LogComponent::kDefault);
    }

    TEST(Flat, FailNonNumeric) {
        BSONObj input = BSON( "verbosity" << "not a number" );

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(ErrorCodes::BadValue, result.getStatus().code());
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Expected default.verbosity to be a number, but found String");
     }

    TEST(Flat, FailBadComponent) {
        BSONObj input = BSON( "NoSuchComponent" << 2 );

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(result.getStatus().code(), ErrorCodes::BadValue);
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Invalid component name default.NoSuchComponent");
    }

    TEST(Nested, Numeric) {
        BSONObj input = BSON("accessControl" << BSON("verbosity" << 1));

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_OK(result.getStatus());
        ASSERT_EQUALS(result.getValue().size(), 1u);
        ASSERT_EQUALS(result.getValue()[0].level, 1);
        ASSERT_EQUALS(result.getValue()[0].component, LogComponent::kAccessControl);
    }

    TEST(Nested, FailNonNumeric) {
        BSONObj input = BSON("accessControl" << BSON("verbosity" << "Not a number"));

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(result.getStatus().code(), ErrorCodes::BadValue);
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Expected accessControl.verbosity to be a number, but found String");
    }

    TEST(Nested, FailBadComponent) {
        BSONObj input = BSON("NoSuchComponent" << BSON("verbosity" << 2));

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(result.getStatus().code(), ErrorCodes::BadValue);
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Invalid component name default.NoSuchComponent");
    }

    TEST(Multi, Numeric) {
        BSONObj input = BSON("verbosity" << 2 <<
                             "accessControl" << BSON("verbosity" << 0) <<
                             "storage" <<
                                 BSON("verbosity" << 3 <<
                                      "journaling" << BSON("verbosity" << 5)));

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_OK(result.getStatus());
        ASSERT_EQUALS(result.getValue().size(), 4u);

        ASSERT_EQUALS(result.getValue()[0].level, 2);
        ASSERT_EQUALS(result.getValue()[0].component, LogComponent::kDefault);
        ASSERT_EQUALS(result.getValue()[1].level, 0);
        ASSERT_EQUALS(result.getValue()[1].component, LogComponent::kAccessControl);
        ASSERT_EQUALS(result.getValue()[2].level, 3);
        ASSERT_EQUALS(result.getValue()[2].component, LogComponent::kStorage);
        ASSERT_EQUALS(result.getValue()[3].level, 5);
        ASSERT_EQUALS(result.getValue()[3].component, LogComponent::kJournaling);
    }

    TEST(Multi, FailBadComponent) {
        BSONObj input = BSON("verbosity" << 6 <<
                             "accessControl"<< BSON("verbosity" << 5) <<
                             "storage" <<
                                 BSON("verbosity" << 4 <<
                                      "journaling" << BSON("verbosity" << 6)) <<
                             "No Such Component" << BSON("verbosity" << 2) <<
                             "extrafield" << 123);

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(result.getStatus().code(), ErrorCodes::BadValue);
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Invalid component name default.No Such Component");
    }

    TEST(DeeplyNested, FailFast) {
        BSONObj input = BSON("storage" <<
                             BSON("this" <<
                                  BSON("is" <<
                                       BSON("nested" <<
                                            BSON("too" << "deeply")))));

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(result.getStatus().code(), ErrorCodes::BadValue);
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Invalid component name storage.this");
    }

    TEST(DeeplyNested, FailLast) {
        BSONObj input = BSON("storage" <<
                             BSON("journaling" <<
                                  BSON("No Such Component" << "bad")));

        StatusWith<Settings> result = parseLogComponentSettings(input);

        ASSERT_NOT_OK(result.getStatus());
        ASSERT_EQUALS(result.getStatus().code(), ErrorCodes::BadValue);
        ASSERT_EQUALS(result.getStatus().reason(),
                      "Invalid component name storage.journaling.No Such Component");
    }
}
